123871718705 has 8 divisors (see below), whose sum is σ = 169881214272. Its totient is φ = 84940607088.

The previous prime is 123871718689. The next prime is 123871718779. The reversal of 123871718705 is 507817178321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123871718705 - 2⁴ = 123871718689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1769595947 + ... + 1769596016.

It is an arithmetic number, because the mean of its divisors is an integer number (21235151784).

Almost surely, 2^123871718705 is an apocalyptic number.

It is an amenable number.

123871718705 is a deficient number, since it is larger than the sum of its proper divisors (46009495567).

123871718705 is an equidigital number, since it uses as much as digits as its factorization.

123871718705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3539191975.

The product of its (nonzero) digits is 658560, while the sum is 50.

The spelling of 123871718705 in words is "one hundred twenty-three billion, eight hundred seventy-one million, seven hundred eighteen thousand, seven hundred five".